Journal
JOURNAL OF APPLIED PHYSICS
Volume 113, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4809762
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- Air Force Office of Scientific Research, Air Force Material Command, USAF [FA8655-11-1-3081]
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mWe use measurements of time and field dependent magnetization reversal in Co/Pd multilayers with perpendicular anisotropy to detect the presence of dilute enclaves of opposite magnetization within a magnetized ferromagnet. Such enclaves are stable due to dipolar fields generated by the surrounding material, and their presence at the onset of reversal can speed the process by orders of magnitude. The field required to suppress these nuclei and reach true magnetic saturation is found to be an order of magnitude higher than the observable macroscopic saturation field. Fatuzzo-Labrune model is extended to describe magnetization reversal starting with ready nucleation domains. (C) 2013 AIP Publishing LLC.
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